可以像下面那样使用have和CASE语句。

  case text1: 
  case text4:{
            //blah
            break;
        }

代码示例计算特定月份中的天数:

class SwitchDemo {
    public static void main(String[] args) {

        int month = 2;
        int year = 2000;
        int numDays = 0;

        switch (month) {
            case 1:
            case 3:
            case 5:
            case 7:
            case 8:
            case 10:
            case 12:
                numDays = 31;
                break;
            case 4:
            case 6:
            case 9:
            case 11:
                numDays = 30;
                break;
            case 2:
                if (((year % 4 == 0) && 
                     !(year % 100 == 0))
                     || (year % 400 == 0))
                    numDays = 29;
                else
                    numDays = 28;
                break;
            default:
                System.out.println("Invalid month.");
                break;
        }
        System.out.println("Number of Days = "
                           + numDays);
    }
}

这是代码的输出:

Number of Days = 29

跌倒：

另一个值得注意的地方是break语句。每个break语句 终止封闭的switch语句。控制流继续使用 开关块后面的第一个语句。break语句 是必要的，因为没有它们，开关块中的语句就会下降 through:在匹配的case标签之后执行的所有语句 序列，不管后续大小写标签的表达式如何， 直到遇到break语句。

示例代码:

public class SwitchFallThrough {

    public static void main(String[] args) {
        java.util.ArrayList<String> futureMonths =
            new java.util.ArrayList<String>();

        int month = 8;

        switch (month) {
            case 1:  futureMonths.add("January");
            case 2:  futureMonths.add("February");
            case 3:  futureMonths.add("March");
            case 4:  futureMonths.add("April");
            case 5:  futureMonths.add("May");
            case 6:  futureMonths.add("June");
            case 7:  futureMonths.add("July");
            case 8:  futureMonths.add("August");
            case 9:  futureMonths.add("September");
            case 10: futureMonths.add("October");
            case 11: futureMonths.add("November");
            case 12: futureMonths.add("December");
            default: break;
        }

        if (futureMonths.isEmpty()) {
            System.out.println("Invalid month number");
        } else {
            for (String monthName : futureMonths) {
               System.out.println(monthName);
            }
        }
    }
}

这是代码的输出:

August
September
October
November
December

在switch语句中使用字符串

在Java SE 7及更高版本中，您可以在交换机中使用String对象 语句的表达。下面的代码示例，， 根据String的值显示月份的数字 叫月:

public class StringSwitchDemo {

    public static int getMonthNumber(String month) {

        int monthNumber = 0;

        if (month == null) {
            return monthNumber;
        }

        switch (month.toLowerCase()) {
            case "january":
                monthNumber = 1;
                break;
            case "february":
                monthNumber = 2;
                break;
            case "march":
                monthNumber = 3;
                break;
            case "april":
                monthNumber = 4;
                break;
            case "may":
                monthNumber = 5;
                break;
            case "june":
                monthNumber = 6;
                break;
            case "july":
                monthNumber = 7;
                break;
            case "august":
                monthNumber = 8;
                break;
            case "september":
                monthNumber = 9;
                break;
            case "october":
                monthNumber = 10;
                break;
            case "november":
                monthNumber = 11;
                break;
            case "december":
                monthNumber = 12;
                break;
            default: 
                monthNumber = 0;
                break;
        }

        return monthNumber;
    }

    public static void main(String[] args) {

        String month = "August";

        int returnedMonthNumber =
            StringSwitchDemo.getMonthNumber(month);

        if (returnedMonthNumber == 0) {
            System.out.println("Invalid month");
        } else {
            System.out.println(returnedMonthNumber);
        }
    }
}

这段代码的输出是8。

来自Java Docs

另一个变化?

  switch (name) {
    case ['text1', 'text2']:
      // do something
      break
    case 'text3':
      // do something
      break
    default:
      // do something
      break
  }

一个switch语句可以使用多个case:

case "firstCase":
case "secondCase": {
    // Run code here for both cases
}

我觉得最好的方法是坠落方法。

case text1:
case text4: {
        //Yada yada
        break;
} 

更漂亮的处理方式

if (["Joe", "Peterson", "Bond" ].indexOf(name) > -1)

    //Do something

else if (["Joe", "Peterson", "Bond" ].indexOf(name) > -1)

    //Do other  ...

您可以为具有相同结果的多个值执行此操作

你可以使用:

case text1: case text4: 
     do stuff;
     break;